cc1200

canals

Other Parts Discussed in Thread: CC1200, CC1190, CC1120, CC1200DK, CC1125, CC1000

Hi!

We would like to know if we can improve the sensitivity of CC1200 transceiver. We work at 1Mbps with 4(GFSK) in the 868 MHZ band. In the attached you could see the current configuration for CC1200.

Or maybe is there a board like the CC1101-CC1190EM 869MHz for the CC1200 transceiver?

We send an infinite packet length because we want a streaming communication and we make our own bit stuffing etc.

The case is that with these settings in the air the communications works fine but we need to put the transmitter under the water where the reception is very poor. Any idea or suggestion?

thank you very much in advance,

Fullscreen 6685.cc1200_cfg_reg_streaming.txt Download

/********1*********2*********3*********4*********5*********6*********7*********8
*
* CC1200 Configuration Registers. For Streaming.
*
*********1*********2*********3*********4*********5*********6*********7*********/
    `IOCFG3           : Data <= 8'h06;
    `IOCFG2           : Data <= 8'h00;
    `IOCFG1           : Data <= 8'h30;
    `IOCFG0           : Data <= 8'h02;
    `SYNC3            : Data <= 8'h93;
    `SYNC2            : Data <= 8'h0B;
    `SYNC1            : Data <= 8'h51;
    `SYNC0            : Data <= 8'hDE;
    `SYNC_CFG1        : Data <= 8'hA8;
    `SYNC_CFG0        : Data <= 8'h03;
    `DEVIATION_M      : Data <= 8'hFF;
    `MODCFG_DEV_E     : Data <= 8'h2F;
    `DCFILT_CFG       : Data <= 8'h1E;
    `PREAMBLE_CFG1    : Data <= 8'h14;
    `PREAMBLE_CFG0    : Data <= 8'h8A;
    `IQIC             : Data <= 8'h00;
    `CHAN_BW          : Data <= 8'h01;
//    `MDMCFG2          : Data <= 8'h00;
    `MDMCFG1          : Data <= 8'h42;
    `MDMCFG0          : Data <= 8'h01;
    `SYMBOL_RATE2     : Data <= 8'hC9;
    `SYMBOL_RATE1     : Data <= 8'h99;
    `SYMBOL_RATE0     : Data <= 8'h99;
    `AGC_REF          : Data <= 8'h2F;
    `AGC_CS_THR       : Data <= 8'hF8;
    `AGC_GAIN_ADJUST  : Data <= 8'h00;
    `AGC_CFG3         : Data <= 8'hB1;
    `AGC_CFG2         : Data <= 8'h60;
    `AGC_CFG1         : Data <= 8'h12;
    `AGC_CFG0         : Data <= 8'h84;
    `FIFO_CFG         : Data <= 8'h73;
    `DEV_ADDR         : Data <= 8'h00;
    `SETTLING_CFG     : Data <= 8'h0B;
    `FS_CFG           : Data <= 8'h12;
    `WOR_CFG1         : Data <= 8'h08;
    `WOR_CFG0         : Data <= 8'h21;
    `WOR_EVENT0_MSB   : Data <= 8'h00;
    `WOR_EVENT0_LSB   : Data <= 8'h00;
    `RXDCM_TIME       : Data <= 8'h00;
    `PKT_CFG2         : Data <= 8'h00;
    `PKT_CFG1         : Data <= 8'h00;
    `PKT_CFG0         : Data <= 8'h40;
    `RFEND_CFG1       : Data <= 8'h3F;
    `RFEND_CFG0       : Data <= 8'h20;
    `PA_CFG1          : Data <= 8'h42;
    `PA_CFG0          : Data <= 8'h56;
    `ASK_CFG          : Data <= 8'h0F;
    `PKT_LEN          : Data <= 8'h00;
// EXTENDED REGs
    `IF_MIX_CFG       : Data <= 8'h00;
    `FREQOFF_CFG      : Data <= 8'h23;
    `TOC_CFG          : Data <= 8'h0B;
    `MARC_SPARE       : Data <= 8'h00;
    `ECG_CFG          : Data <= 8'h00;
    `MDMCFG2          : Data <= 8'h00;
    `EXT_CTRL         : Data <= 8'h01;
    `RCCAL_FINE       : Data <= 8'h00;
    `RCCAL_COARSE     : Data <= 8'h00;
    `RCCAL_OFFSET     : Data <= 8'h00;
    `FREQOFF1         : Data <= 8'h00;
    `FREQOFF0         : Data <= 8'h00;
    `FREQ2            : Data <= 8'h56;
    `FREQ1            : Data <= 8'hCC;
    `FREQ0            : Data <= 8'hCC;
    `IF_ADC2          : Data <= 8'h02;
    `IF_ADC1          : Data <= 8'hEE;
    `IF_ADC0          : Data <= 8'h10;
    `FS_DIG1          : Data <= 8'h07;
    `FS_DIG0          : Data <= 8'hA3;
    `FS_CAL3          : Data <= 8'h00;
    `FS_CAL2          : Data <= 8'h20;
    `FS_CAL1          : Data <= 8'h40;
    `FS_CAL0          : Data <= 8'h0E;
    `FS_CHP           : Data <= 8'h28;
    `FS_DIVTWO        : Data <= 8'h03;
    `FS_DSM1          : Data <= 8'h00;
    `FS_DSM0          : Data <= 8'h33;
    `FS_DVC1          : Data <= 8'hFF;
    `FS_DVC0          : Data <= 8'h17;
    `FS_LBI           : Data <= 8'h00;// only R
    `FS_PFD           : Data <= 8'h00;
    `FS_PRE           : Data <= 8'h6E;
    `FS_REG_DIV_CML   : Data <= 8'h14;
    `FS_SPARE         : Data <= 8'hAC;
    `FS_VCO4          : Data <= 8'h14;
    `FS_VCO3          : Data <= 8'h00;
    `FS_VCO2          : Data <= 8'h00;
    `FS_VCO1          : Data <= 8'h00;
    `FS_VCO0          : Data <= 8'hB5;
    `GBIAS6           : Data <= 8'h00;
    `GBIAS5           : Data <= 8'h02;
    `GBIAS4           : Data <= 8'h00;
    `GBIAS3           : Data <= 8'h00;
    `GBIAS2           : Data <= 8'h10;
    `GBIAS1           : Data <= 8'h00;
    `GBIAS0           : Data <= 8'h00;
    `IFAMP            : Data <= 8'h0D;
    `LNA              : Data <= 8'h01;
    `RXMIX            : Data <= 8'h01;
    `XOSC5            : Data <= 8'h0E;
    `XOSC4            : Data <= 8'hA0;
    `XOSC3            : Data <= 8'h03;
    `XOSC2            : Data <= 8'h04;
    `XOSC1            : Data <= 8'h03;
    `XOSC0            : Data <= 8'h00;// only R
    `ANALOG_SPARE     : Data <= 8'h00;
    `PA_CFG3          : Data <= 8'h00;
    `WOR_TIME1        : Data <= 8'h00;// only R
    `WOR_TIME0        : Data <= 8'h00;// only R
    `WOR_CAPTURE1     : Data <= 8'h00;// only R
    `WOR_CAPTURE0     : Data <= 8'h00;// only R
    `BIST             : Data <= 8'h00;
    `DCFILTOFFSET_I1  : Data <= 8'h00;
    `DCFILTOFFSET_I0  : Data <= 8'h00;
    `DCFILTOFFSET_Q1  : Data <= 8'h00;
    `DCFILTOFFSET_Q0  : Data <= 8'h00;
    `IQIE_I1          : Data <= 8'h00;
    `IQIE_I0          : Data <= 8'h00;
    `IQIE_Q1          : Data <= 8'h00;
    `IQIE_Q0          : Data <= 8'h00;
    `RSSI1            : Data <= 8'h80;// only R
    `RSSI0            : Data <= 8'h00;// only R
    `MARCSTATE        : Data <= 8'h41;// only R
    `LQI_VAL          : Data <= 8'h00;// only R
    `PQT_SYNC_ERR     : Data <= 8'hFF;// only R
    `DEM_STATUS       : Data <= 8'h00;// only R
    `FREQOFF_EST1     : Data <= 8'h00;// only R
    `FREQOFF_EST0     : Data <= 8'h00;// only R
    `AGC_GAIN3        : Data <= 8'h00;// only R
    `AGC_GAIN2        : Data <= 8'hD1;
    `AGC_GAIN1        : Data <= 8'h00;
    `AGC_GAIN0        : Data <= 8'h3F;
    `CFM_RX_DATA_OUT  : Data <= 8'h00;// only R
    `CFM_TX_DATA_IN   : Data <= 8'h00;
    `ASK_SOFT_RX_DATA : Data <= 8'h30;// only R
    `RNDGEN           : Data <= 8'h7F;
    `MAGN2            : Data <= 8'h00;// only R
    `MAGN1            : Data <= 8'h00;// only R
    `MAGN0            : Data <= 8'h00;// only R
    `ANG1             : Data <= 8'h00;// only R
    `ANG0             : Data <= 8'h00;// only R
    `CHFILT_I2        : Data <= 8'h02;// only R
    `CHFILT_I1        : Data <= 8'h00;// only R
    `CHFILT_I0        : Data <= 8'h00;// only R
    `CHFILT_Q2        : Data <= 8'h00;// only R
    `CHFILT_Q1        : Data <= 8'h00;// only R
    `CHFILT_Q0        : Data <= 8'h00;// only R
    `GPIO_STATUS      : Data <= 8'h00;// only R
    `FSCAL_CTRL       : Data <= 8'h01;
    `PHASE_ADJUST     : Data <= 8'h00;// only R
    `PARTNUMBER       : Data <= 8'h20;// only R
    `PARTVERSION      : Data <= 8'h10;// only R
    `SERIAL_STATUS    : Data <= 8'h04;// Enable synchronizer for IO pins. 
    `MODEM_STATUS1    : Data <= 8'h10;// only R
    `MODEM_STATUS0    : Data <= 8'h00;// only R
    `MARC_STATUS1     : Data <= 8'h00;// only R
    `MARC_STATUS0     : Data <= 8'h00;// only R
    `PA_IFAMP_TEST    : Data <= 8'h00;
    `FSRF_TEST        : Data <= 8'h00;
    `PRE_TEST         : Data <= 8'h00;
    `PRE_OVR          : Data <= 8'h00;
    `ADC_TEST         : Data <= 8'h00;
    `DVC_TEST         : Data <= 8'h0B;
    `ATEST            : Data <= 8'h40;
    `ATEST_LVDS       : Data <= 8'h00;
    `ATEST_MODE       : Data <= 8'h00;
    `XOSC_TEST1       : Data <= 8'h3C;
    `XOSC_TEST0       : Data <= 8'h00;
    `AES              : Data <= 8'h00;
    `MDM_TEST         : Data <= 8'h00;
    `RXFIRST          : Data <= 8'h00;
    `TXFIRST          : Data <= 8'h00;
    `RXLAST           : Data <= 8'h00;
    `TXLAST           : Data <= 8'h00;
    `NUM_TXBYTES      : Data <= 8'h00;// only R
    `NUM_RXBYTES      : Data <= 8'h00;// only R
    `FIFO_NUM_TXBYTES : Data <= 8'h0F;// only R
    `FIFO_NUM_RXBYTES : Data <= 8'h00;// only R
    `RXFIFO_PRE_BUF   : Data <= 8'h00;// only R
    `AES_KEY15        : Data <= 8'h00;
    `AES_KEY14        : Data <= 8'h00;
    `AES_KEY13        : Data <= 8'h00;
    `AES_KEY12        : Data <= 8'h00;
    `AES_KEY11        : Data <= 8'h00;
    `AES_KEY10        : Data <= 8'h00;
    `AES_KEY9         : Data <= 8'h00;
    `AES_KEY8         : Data <= 8'h00;
    `AES_KEY7         : Data <= 8'h00;
    `AES_KEY6         : Data <= 8'h00;
    `AES_KEY5         : Data <= 8'h00;
    `AES_KEY4         : Data <= 8'h00;
    `AES_KEY3         : Data <= 8'h00;
    `AES_KEY2         : Data <= 8'h00;
    `AES_KEY1         : Data <= 8'h00;
    `AES_KEY0         : Data <= 8'h00;
    `AES_BUFFER15     : Data <= 8'h00;
    `AES_BUFFER14     : Data <= 8'h00;
    `AES_BUFFER13     : Data <= 8'h00;
    `AES_BUFFER12     : Data <= 8'h00;
    `AES_BUFFER11     : Data <= 8'h00;
    `AES_BUFFER10     : Data <= 8'h00;
    `AES_BUFFER9      : Data <= 8'h00;
    `AES_BUFFER8      : Data <= 8'h00;
    `AES_BUFFER7      : Data <= 8'h00;
    `AES_BUFFER6      : Data <= 8'h00;
    `AES_BUFFER5      : Data <= 8'h00;
    `AES_BUFFER4      : Data <= 8'h00;
    `AES_BUFFER3      : Data <= 8'h00;
    `AES_BUFFER2      : Data <= 8'h00;
    `AES_BUFFER1      : Data <= 8'h00;
    `AES_BUFFER0      : Data <= 8'h00;

over 11 years ago

0 TER over 11 years ago

TI__Guru**** 317180 points

I looked at some of the most important registers in your setup and from what I can see you have you have used the 500ksps/ 4GFSK settings from SmartRF Studio. These are the best settings we have when it comes to performance.

To get better performance you can lower the datarate if that is an option or you can add CC1190. For this you can use the CC1120+CC1190 ref design (http://www.ti.com/tool/cc1120-cc1190em868rd) and change crystal and RF chip.

0 canals over 11 years ago in reply to TER

Prodigy 50 points

Hi TER!

Thank you very much for your answer. Yes, we used the SmartRF studio to configure the CC1200 as a Start point. If we want to decrease the data rate to 900 kbps, besides to change the SYMBOL_RATEx registers, what are the other registers that we should pay attention to keep the performance?

Thank you very much again for your help.

joan

0 TER over 11 years ago in reply to canals

TI__Guru**** 317180 points

Going from 1000 kbps to 900 kbps is a minor change and changing only the symbol rate should be sufficient.

0 Jeff Rivard over 10 years ago

Intellectual 320 points

Hi,

We would like to use the CC1200 on a new design at 757 to 788 MHz.

We are looking for the following:

1) CC1200 reference design just above that range

2) CC1200 reference design just below that range (so we can scale the RF parts to get to the frequency range we need)

Thanks.

Jeff Rivard

jrivard@solectek.com

760-447-1715

0 TER over 10 years ago in reply to Jeff Rivard

TI__Guru**** 317180 points

If you look at the CC1200 datasheet, the frequency range you want to use is not covered by the CC1200.

0 Jeff Rivard over 10 years ago in reply to TER

Intellectual 320 points

Hi - Thanks for your help.

Please provide the schematic/BOM of the CC1200DK reference design at 433MHz and also the one at 868MHz.

Best regards,

Jeff Rivard

760-447-1715

0 SVS over 10 years ago in reply to Jeff Rivard

TI__Genius 9705 points

Hello Jeff,

Reference designs for CC1200 can be downloaded from the product folder at http://www.ti.com/product/CC1200/toolssoftware.

Regards,

0 Jeff Rivard over 10 years ago in reply to SVS

Intellectual 320 points

Hi,

Thanks for the documents.

I did not find the Schematic and BOM of either the 433MHz or 868MHz using the link you provided.

Please provide a link directly to the Schematic and BOM.

Best regards,

Jeff

0 TER over 10 years ago in reply to Jeff Rivard

TI__Guru**** 317180 points

They are available on the link SVS sent out. They are under the heading "TI designs"

0 Jeff Rivard over 10 years ago in reply to TER

Intellectual 320 points

Hi,

Thanks for the reference design with RF components for the 420 and 869MHz bands.

If we change the RF components on the schematic and recenter the design to 757MHz, do you see a problem with changing the frequency to 757MHz using your software ?

Best regards,

Jeff

0 TER over 10 years ago in reply to Jeff Rivard

TI__Guru**** 317180 points

Please check the CC1200 datasheet regarding which frequencies CC1200 covers.

0 Jeff Rivard over 10 years ago in reply to TER

Intellectual 320 points

Hi,

Does the CC1200 Design Kit work with the RF Studio Software?

Best regards,

Jeff

0 TER over 10 years ago in reply to Jeff Rivard

TI__Guru**** 317180 points

Yes, you can use SmartRF Studio to talk to a CC11200 (EM) via either a CCDebugger or a TRXEB..

0 Jeff Rivard over 10 years ago in reply to TER

Intellectual 320 points

With SmartRF Studio will I be able to set the frequency to 757MHz or is the sw not able to go there?

p.s. I know the radio will not work at 757MHz unless I change the external components, this question is only about the sw (we will talk about the hardware later).

0 TER over 10 years ago in reply to Jeff Rivard

TI__Guru**** 317180 points

I would take a look at table 4.5 in the datasheet first.

0 Jeff Rivard over 10 years ago in reply to TER

Intellectual 320 points

Hi,

Yes I have looked at table 4.5 in the datasheet. We had a similar situation with the CC1125 when we moved the frequency to 220MHz (see table 1.3 of the CC1125 datasheet: 220MHz is out of the frequency ranges of the table, but after changing the RF parts to recenter the reference design to 220MHz, it worked great at 220MHz for this project). This time we are tying to do something similar with the CC1200 at 757MHz..

With SmartRF Studio will I be able to set the frequency to 757MHz or is the sw not able to go there?

Best regards,

Jeff Rivard

760-447-1715

0 TER over 10 years ago in reply to Jeff Rivard

TI__Guru**** 317180 points

Actually 220 MHz is listed as a supported band (we don't have a EM for that band hence the note) but 757 MHz is not in a supported band. You will not be able to use CC1200 for 757 MHz.

0 Jeff Rivard over 10 years ago in reply to TER

Intellectual 320 points

220MHz is NOT listed as a supported band of CC1125 (see CC1125 datasheet table in Section 1.3).

But the CC1125 STILL WORKED at 220MHz even if 220MHz was NOT listed in the datasheet.

Please answer the question below:

With SmartRF Studio will I be able to set the frequency to 757MHz or is the sw not able to go there (with the CC1200 Design Kit)?

Best regards

0 Siri over 10 years ago in reply to Jeff Rivard

TI__Guru* 85971 points

220 MHz is listed in the data sheet. Please see Section 4.5.

Siri

0 Sverre over 10 years ago in reply to Jeff Rivard

TI__Mastermind 39860 points

With reference to CC1125 data sheet, section 4.5 you will see that 220 MHz is supported. We do not have a reference design for the 205-240 MHz frequency band and is the reason why this band is given in brackets. The VCO and PLL has been tested at this frequency band and 220 MHz operation is not a problem.

The VCO is fully integrated in CC112x/CC120x and it has a finite VCO tuning range. It is not possible to change the tuning range through external components. Operation at 757 MHz is not possible.

0 Jeff Rivard over 10 years ago in reply to Sverre

Intellectual 320 points

You said CC1125 section 4.5 says 220MHz is included. This is false. I reproduce Section 4.5 of CC1125 below:

4.5 Enhanced Wake-On-Radio (eWOR)
eWOR, using a flexible integrated sleep timer, enables automatic receiver polling with no
intervention from the MCU. The CC1125 will enter RX, listen and return to sleep if a valid RF packet
is not received. The sleep interval and duty cycle can be configured to make a trade-off between
network latency and power consumption. Incoming messages are time-stamped to simplify timer
re-synchronization.
The eWOR timer runs off an ultra low power 32 kHz RC oscillator. To improve timing accuracy,
the RC oscillator can be automatically calibrated to the RF crystal in configurable intervals.
4.6 Sniff Mode

Maybe what you meant is "Section 4.5 of CC1200" not "CC1125", but I am not talking about CC1200 I am talking about CC1125 for 220MHz.

Back to 757MHz:

The VCO of the CC1200 can work from 164MHz to 950MHz according to the datasheet. This means it has the capability to work at 757MHz. Please explain better why the VCO can work from 164 to 950MHz with the same integrated components but it will "skip" 757MHz (so far the explanation is not satisfactory).

Best regards,

Jeff

0 TER over 10 years ago in reply to Jeff Rivard

TI__Guru**** 317180 points

4.5 in the CC1125 Datasheet (www.ti.com/.../cc1125.pdf) says that 220 MHz is supported

No, the Datasheet does NOT state that the VCO covers the whole range.

0 Sverre over 10 years ago in reply to TER

TI__Mastermind 39860 points

The VCO has a finite tuning range from 3280 MHz to 3840 MHz. The VCO frequency is divided down by 4, 8, 12, 16, 20 or 24 and this gives you the finite frequency ranges in the data sheet (section 4.5) and the user guide (section 9.12)

0 Jeff Rivard over 10 years ago in reply to Sverre

Intellectual 320 points

Thanks. Very good explanation.

Do you have a similar transceiver part that will go to 757-788MHz?

Best regards,

Jeff

0 Sverre over 10 years ago in reply to Jeff Rivard

TI__Mastermind 39860 points

Sorry, but we do not have any radios supporting 757 to 788 MHz except CC1000, which is more than 15 years old.... The VCO inductor used with this radio is external and it is thus possible to tune to 757 to 788 MHz operation.

Sub-1 GHz

Sub-1 GHz forum

cc1200